Permethrin
California Water Service (CWS) - King City
Permethrin is an insecticide used on agricultural crops, but most uses are non-agricultural. It can be applied to residential areas to control mosquitoes and ticks and also used as a bug repellent on clothing, as well as medical applications to treat head lice. Long-term exposure to permethrin may harm the liver.
12
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | N/A | 0 | 0 | N/A |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | N/A | 0 | 0 | N/A |
| 2017 | N/A | 0 | 0 | N/A |
| 2018 | ND | 6 | 0 | ND |
| 2019 | ND | 6 | 0 | ND |
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2018-10-02 | A8I2046-03 | ND |
| 2018-10-02 | A8I2048-03 | ND |
| 2018-10-10 | A8I2055-03 | ND |
| 2018-10-10 | A8I2058-03 | ND |
| 2018-10-30 | A8I2053-03 | ND |
| 2018-10-31 | A8I1587-03 | ND |
| 2019-04-02 | A9C0884-03 | ND |
| 2019-04-02 | A9C0887-03 | ND |
| 2019-04-09 | A9C1789-03 | ND |
| 2019-04-16 | A9C1792-03 | ND |
| 2019-04-16 | A9C1790-03 | ND |
| 2019-04-17 | A9C0883-03 | ND |